Watco Wallseal
Litres required: 0.00L
Based on 8.0 m² per litre- Lightwork of heavy-duty repairs
- Structural strength solutions
Watco Wallseal is a clear, penetrating wall sealer for dusty brickwork, blockwork, concrete and other suitable porous surfaces. Its water based acrylic formulation binds loose surface dust and helps protect the substrate while retaining the character of exposed masonry.
It is useful on gritty warehouse walls, concrete columns, render and plaster where ongoing dusting makes the space difficult to keep clean. One coat generally binds and dustproofs the surface. A second coat can build a low-sheen, wipe-clean finish, with the final appearance depending on absorption and the number of coats. Wallseal causes only minimal darkening on many surfaces, but a trial patch is worthwhile on decorative masonry.
- Clear dustproofer for porous walls and masonry.
- Water based, single pack formulation.
- Brush or roller application without a separate primer.
Surface Preparation
Brush away loose dust and friable material. The substrate must be sound enough for treatment and porous so the liquid can penetrate. Remove oil or grease with a suitable cleaner such as Watco Bio-D, rinse away residues and allow the wall to dry. Avoid soaking very absorbent surfaces during cleaning.
Technical Data
| Pack size | 25L |
|---|---|
| Composition | Single pack, water based acrylic |
| Finish | Clear; sheen increases with further coats |
| Use | Interior and exterior |
| Minimum conditions | Air 15°C; wall 10°C |
| Shelf life | 24 months unopened |
Coverage
Approximately 40–50m² per 5L, or 200–250m² per 25L per coat, depending on absorption. Allow a conservative 8m²/L for planning. Particularly porous or textured walls can use more, especially where further coats are needed for a sealed finish.
Directions for Use
- Prepare the surface and follow the container instructions; the technical sheet advises shaking the container before use.
- Pour some material into a suitable tray and apply generously with a brush or roller.
- Work the liquid into the porous surface, controlling runs and allowing the wall to absorb the treatment. A brush can be easier on rough or uneven masonry.
- Where another coat is required, allow around six hours at 20°C or eight hours at 10°C. Full drying is approximately twenty-four hours under the stated conditions.
Limitations
Do not apply to painted or sealed surfaces: the product relies on penetration. Do not use on a wet wall; only slight residual damp after cleaning is acceptable. Additional coats can change the sheen and appearance, so test where that matters. A dustproofer does not replace repairing a structurally unsound wall or resolving water ingress. Do not steam clean the finish. Condition material at 15–25°C before use and protect from frost.
Product FAQs
Can I keep the exposed-brick appearance?
Wallseal dries clear with minimal darkening on many substrates. Test a small area first because absorption affects the appearance.
How many coats are needed?
One generally binds dust. A second or further coat may be needed for a more sealed, wipe-clean finish on porous surfaces.
Can it be used over wall paint?
No. The technical sheet excludes painted and sealed surfaces because Wallseal must penetrate.
How much area does the container cover?
Approximately 200–250m² per 25L per coat, with reduced coverage on very porous or textured walls.
Data Sheets
We aim to deliver your products as quickly, safely and efficiently as possible. Below you'll find a full overview of our delivery process, options, pricing and terms. If you have any questions or a time-sensitive order, our team is always happy to help — just give us a call on 01902 712286.
📦 Standard Delivery
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Free delivery on eligible orders of £150 ex VAT or more within UK mainland.
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For eligible orders below £150 ex VAT, standard delivery is £8.75 + VAT. Products with their own delivery rates are excluded; the applicable charge is shown at checkout.
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Orders are typically delivered within 2–5 working days after receipt of cleared payment.
We use Parcelforce and FedEx as our main carriers, though this may vary based on location or size of your order.
⚠️ Important Notes on Delivery
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Orders placed after 12 midday (Monday–Friday) are usually dispatched the next working day.
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If you require urgent dispatch or Saturday delivery, please call us before placing your order.
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Do not schedule contractors or start work until goods have arrived and been checked — we cannot be held responsible for project delays due to late or damaged deliveries.
🚚 Next Day & Timed Delivery Options
We offer express shipping for orders needing a quicker turnaround:
| Service | Typical Cost* (Ex. VAT) |
|---|---|
| Next Day Delivery | £10.50 |
| Next Day AM Delivery | £15.00 |
| Specialist Items | £22–£25+ |
*Pricing depends on order contents and size. For mixed/tinted paint or specialist coatings, next-day delivery may cost more due to courier restrictions.
Please contact us if your order is time-sensitive — we’ll confirm what options are available based on your products and location.
📍 Delivery Outside UK Mainland
International Delivery
We are pleased to offer worldwide delivery on both parcel and pallet orders.
Parcel Shipments
All international parcel deliveries are handled by FedEx International. Shipping times and costs vary depending on destination, parcel size, and service availability.
Pallet Shipments (Including Dangerous Goods)
For palletised orders — including those containing dangerous goods - we work with independent specialist freight companies experienced in compliant global hazardous materials transport.
Due to the nature of these shipments, pricing and transit times are provided on a case‑by‑case basis.
Requesting an International Delivery Quote
If you would like to place an international order, simply get in touch and we will prepare a personalised shipping quote. Please provide the following details:
- Your full name
- Delivery address (including country and any required customs information)
- Details of the items you would like to order
- Quantities for each item
Once we have this information, we’ll handle the rest - from calculating the most suitable shipping method to arranging safe and compliant delivery to your destination.
🛠️ Specialist Products & Pallet Deliveries
Some coatings are made to order, particularly from premium brands like Sigma/PPG. These orders:
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May have longer lead times
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May carry a £150 + VAT delivery charge
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Could require pallet delivery — a separate charge may apply
If your order requires palletisation, we’ll contact you after checkout to confirm delivery costs. You're also welcome to contact us first for a delivery quote before placing the order.
📦 Stock & Availability
We hold a large amount of stock ready for immediate dispatch, but:
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Some products may need to be ordered in from manufacturers
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Specialist items may be tinted or made to order, causing additional lead time
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We’ll always aim to part-deliver where possible to avoid unnecessary delays
If you’re on a strict deadline, please get in touch before ordering so we can advise on delivery timeframes.
🚫 Delivery Liability
While we work hard to ensure your order arrives safely and on time, we use third-party carriers and cannot be held liable for:
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Delays in transit
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Lost shipments
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Goods damaged in delivery
If your order is damaged or delayed, please let us know as soon as possible. We are not always informed automatically by the courier, so your input is essential.
We will work with you to resolve any issues — whether that means replacing items or chasing the carrier.
Note: Address changes after dispatch may incur additional charges, so please double-check your delivery details at checkout.
🧾 Payments & Order Processing
Orders are only processed once full cleared payment has been received.
You will receive email updates at each stage of the process:
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Pending – order received
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Processing – being picked, packed or manufactured
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Dispatched – on the way with the carrier
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Back order / Part dispatched – if stock is split or delayed
Need Help?
If you're unsure about shipping costs, timelines, or need your order by a specific date, we strongly recommend giving us a quick call before placing your order:
📞 01902 712286
📧 info@andrewscoatings.co.uk
We're here to help make sure you get the right product, in the right place, at the right time.
